Header component, heat exchanger and air conditioning system

Abstract

The utility model relates to the technical field of air conditioners, and discloses a header component which comprises a main pipe section, a connecting pipe section and a connecting pipe section. The first end of the first branch pipe is communicated with the pipe wall of the main pipe section; the first end of the second branch pipe is inserted into the main pipe section from the mounting opening, a backflow gap is formed between the pipe outer wall of the first end of the second branch pipe and the pipe inner wall of the main pipe section, and the first end of the second branch pipe is located at the downstream of the first branch pipe; and the refrigerant flowing to the second end of the main pipe section can flow into the first end of the second branch pipe along the backflow gap. Therefore, the shunting uniformity of the first branch pipe and the second branch pipe is effectively balanced. The utility model further discloses the heat exchanger and an air conditioning system.

Description

Technical Field

[0001] This application relates to the field of air conditioner technology, such as a manifold component, heat exchanger, and air conditioning system. Background Technology

[0002] Currently, air conditioners have become an indispensable appliance, widely used in homes, businesses, and transportation, for regulating air parameters such as cooling and heating. Related technology discloses an air conditioner including a heat exchanger. The heat exchanger includes a manifold assembly and multiple heat exchange branches. The manifold assembly has multiple liquid distribution branches for connecting corresponding heat exchange branches.

[0003] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0004] The flow distribution in the multiple branch pipes is uneven.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0007] This disclosure provides a manifold component, heat exchanger, and air conditioning system that solves the problem of uneven flow distribution among multiple liquid distribution branches.

[0008] In some embodiments, the manifold component includes:

[0009] The main pipe section has an inlet at its first end and an installation port at its second end;

[0010] The first branch pipe, the first end of which is connected to the pipe wall of the main pipe section;

[0011] The second branch pipe has its first end inserted into the main pipe section from the installation port. There is a backflow gap between the outer wall of the first end of the pipe and the inner wall of the main pipe section. Furthermore, the first end of the first branch pipe is located downstream of the first branch pipe.

[0012] The refrigerant flowing to the second end of the main pipe can flow into the first end of the second branch pipe along the return gap.

[0013] In some embodiments, the heat exchanger includes at least a first heat exchange module and a second heat exchange module, wherein the first heat exchange module includes:

[0014] The first heat exchange branch group includes multiple heat exchange branches;

[0015] A first flow path switching component is disposed in the first heat exchange branch group and is used to switch the connection mode of at least some different heat exchange branches in the first heat exchange branch group under different operating modes.

[0016] The first heat exchange module and / or the second heat exchange module include the manifold component.

[0017] In some embodiments, the air conditioning system includes the heat exchanger.

[0018] The manifold components, heat exchangers, and air conditioning systems provided in this disclosure can achieve the following technical effects:

[0019] By inserting the first end of the second branch pipe into the main pipe section, the distance between the second and first branch pipes is shortened, which helps ensure sufficient refrigerant enters the second branch pipe. Furthermore, due to the reflux gap, some refrigerant flowing to the second end of the main pipe section is turned back along the reflux gap towards the first end of the second branch pipe. This portion of refrigerant then needs to be turned back again to enter the second branch pipe. Therefore, the resistance to refrigerant flowing into the second branch pipe increases, preventing refrigerant from directly rushing to the top of the second branch pipe and ensuring the refrigerant flow rate in the upstream first branch pipe. This effectively balances the uniformity of the flow distribution between the first and second branch pipes.

[0020] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0021] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0022] Figure 1 This is a schematic diagram of the heat exchanger provided in this application;

[0023] Figure 2 This is a schematic diagram of the refrigerant flow direction of the first heat exchange module provided in this application, wherein (a) is a schematic diagram of the flow direction when it is used as a condenser, and (b) is a schematic diagram of the flow direction when it is used as an evaporator.

[0024] Figure 3 This is a schematic diagram of the structure of the mixing component according to the first embodiment of this application;

[0025] Figure 4 This is a schematic diagram of the refrigerant distribution in the inlet pipe section according to the first embodiment of this application;

[0026] Figure 5This is a schematic diagram of the structure of the disintegration component according to the second embodiment of this application;

[0027] Figure 6 This is a schematic diagram of the refrigerant distribution in the inlet pipe section according to the second embodiment of this application;

[0028] Figure 7 This is a structural schematic diagram of the manifold component according to the third embodiment of this application;

[0029] Figure 8 This is a schematic diagram of the main control section of the third embodiment of this application;

[0030] Figure 9 This is a schematic diagram of the reflow gap according to the third embodiment of this application;

[0031] Figure 10 This is a schematic diagram of the structure of the third embodiment of this application, which simultaneously includes a mixing component and a dispersing component;

[0032] Figure 11 This is a schematic diagram of the refrigerant distribution in the inlet pipe section according to the third embodiment of this application.

[0033] Figure label:

[0034] 100. Heat exchanger; 110. First heat exchange module; 111. First heat exchange branch; 112. Second heat exchange branch; 113. Third heat exchange branch; 120. Second heat exchange module; 130. First manifold assembly; 131. First conductive component; 140. Second manifold assembly; 141. Second conductive component;

[0035] 200. Main pipe section; 201. Inlet; 202. Installation port; 210. First branch pipe; 211. End branch pipe; 212. First branch pipe; 220. Second branch pipe; 221. Backflow gap; 230. Inlet pipe section; 231. First pipe wall; 232. Second pipe wall; 233. Curved section; 234. Installation section; 240. Mixing plate; 241. Mixing gap; 250. Dispersing cylinder; 251. First cylinder surface; 252. Second cylinder surface; 253. First cylinder opening; 254. Second cylinder opening; 255. First small hole; 256. Second small hole. Detailed Implementation

[0036] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0037] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for describing embodiments of this disclosure herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0038] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0039] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0040] Unless otherwise stated, the term "multiple" means two or more.

[0041] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0042] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0043] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0044] This disclosure provides an air conditioning system, including a heat exchanger 100. For example... Figure 1As shown, the heat exchanger 100 includes at least a first heat exchange module 110 and a second heat exchange module 120. The first heat exchange module 110 includes a first heat exchange branch group and a first flow path switching component. The first heat exchange branch group includes multiple heat exchange branches. The first flow path switching component is disposed in the first heat exchange branch group and is used to switch the connection mode of at least some of the different heat exchange branches in the first heat exchange branch group under different operating modes. The first heat exchange module 110 and / or the second heat exchange module 120 include manifold components.

[0045] In this embodiment, the heat exchanger 100 includes at least two heat exchange modules, namely a first heat exchange module 110 and a second heat exchange module 120. Thus, in scenarios where the heat exchanger 100 has a long flow path and many branches, by setting multiple heat exchange modules, the number of heat exchange tubes in a single heat exchange module is not too large, which is beneficial to the uniformity of refrigerant distribution in each heat exchange module of the heat exchanger 100, thereby improving the heat exchange capacity of the heat exchanger 100.

[0046] Furthermore, the first flow path switching component is used to switch the connection mode of at least some different heat exchange branches in the first heat exchange branch group under different operating modes. For example, when the air conditioning system is operating in cooling mode and the outdoor heat exchanger 100 acts as a condenser, multiple heat exchange branches in the first heat exchange branch group are connected in series. When the air conditioning system is operating in heating mode and the outdoor heat exchanger 100 acts as an evaporator, multiple heat exchange branches in the first heat exchange branch group are connected in parallel. In this way, the first flow path switching component ensures that the heat exchanger 100 has an optimal flow path in different operating modes, that is, it has a variable flow splitting function, effectively improving the heat exchange efficiency of the heat exchanger 100.

[0047] like Figure 2As shown, taking the first heat exchange module 110 as an example, the first heat exchange module 110 includes a first manifold component 130 and a second manifold component 140. The first flow path switching assembly includes a first conductive component 131 and a second conductive component 141, with the first conductive component 131 disposed on the first manifold component 130 and the second conductive component 141 disposed on the second manifold component 140. The first heat exchange branch group includes a first heat exchange branch 111, a second heat exchange branch 112, and a third heat exchange branch 113. The first end of the first heat exchange branch 111 is connected to the upstream of the first conductive component 131, and the second end of the first heat exchange branch 111 is connected to the upstream of the second conductive component 141. The first end of the second heat exchange branch 112 is connected to the downstream of the first conductive component 131, and the second end of the second heat exchange branch 112 is connected to the upstream of the second conductive component 141. The first end of the third heat exchange branch 113 is connected to the downstream of the first conductive component 131, and the second end of the third heat exchange branch 113 is connected to the downstream of the second conductive component 141. It should be noted that the upstream and downstream concepts of the first conductive component 131 and the second conductive component 141 are based on the flow direction when the heat exchanger 100 is used as an evaporator. Furthermore, the first heat exchange module 110 may have 4, 5, 6, or more heat exchange branches, which will not be listed here.

[0048] When heat exchanger 100 is used as a condenser, such as Figure 2 As shown in (a), the refrigerant enters the heat exchanger 100 through the second manifold assembly 140, while the first and second conductive components 131 and 141 block the flow. At this time, the refrigerant flows sequentially along the third heat exchange branch 113, the second heat exchange branch 112, and the first heat exchange branch 111 connected in series to the inlet and outlet of the first manifold assembly 130, and finally exits the heat exchanger 100. When the heat exchanger 100 functions as an evaporator, as... Figure 2 As shown in (b), the refrigerant enters the heat exchanger 100 through the first manifold component 130, and the first conductive component 131 and the second conductive component 141 are connected. At this time, the refrigerant flows along the parallel first heat exchange branch 111, the second heat exchange branch 112 and the third heat exchange branch 113 to the inlet and outlet of the second manifold component 140, and finally flows out of the heat exchanger 100.

[0049] In the case where the air conditioning system is in heating mode and the outdoor heat exchanger 100 acts as an evaporator, the refrigerant enters the heat exchanger 100 through the first manifold assembly 130. Since multiple heat exchange branches are connected to the first manifold assembly 130, the flow distribution within the first manifold assembly 130 and the uniformity of the gas-liquid two-phase refrigerant in each heat exchange branch directly affect the performance of the heat exchanger 100. The following three specific embodiments detail the improvements to the manifold assembly.

[0050] The first embodiment provides a manifold component with a mixing assembly, including an inflow pipe section 230 and a mixing assembly. For example... Figure 3 and Figure 4 As shown, the inflow pipe section 230 includes a first pipe wall 231 and a second pipe wall 232 facing each other. When the two-phase refrigerant flows, the liquid refrigerant is closer to the first pipe wall 231 and the gaseous refrigerant is closer to the second pipe wall 232. A mixing assembly is disposed within the inflow pipe section 230 and includes a mixing plate 240. A first side of the mixing plate 240 is connected to the first pipe wall 231, and a second side of the mixing plate 240 is inclined towards the refrigerant outflow direction. A mixing gap 241 is formed between the second side of the mixing plate 240 and the second pipe wall 232. The mixing plate 240 can guide the upstream liquid refrigerant to flow towards the mixing gap 241, so that the liquid and gaseous refrigerants mix at the mixing gap 241 and then flow downstream of the mixing plate 240.

[0051] In this embodiment, under the action of the mixing plate 240, the liquid refrigerant flows along the first pipe wall 231 to the first side of the mixing plate 240, and then flows along the inclined direction of the mixing plate 240 to the mixing gap 241. When the gaseous refrigerant flows along the second pipe wall 232 to the mixing gap 241, it mixes with the liquid refrigerant guided by the mixing plate 240. Because the flow area of ​​the mixing gap 241 is narrow and the flow area downstream is wide, the refrigerant after mixing passes through the mixing gap 241 and is sprayed downstream, which is beneficial for further mixing. In this way, the uniformity of gas-liquid mixing can be effectively improved.

[0052] Optionally, such as Figure 3 As shown, the cross-section at the connection between the inflow pipe section 230 and the mixing plate 240 is denoted as the first cross-section, and the angle between the mixing plate 240 and the first cross-section is denoted as α, where 0 < α ≤ 80°. For example, the value of α can be 10°, 20°, 30°, 40°, 50°, 60°, 70°, or 80°.

[0053] Optionally, if the width of the mixing gap 241 is w1 and the diameter of the inflow pipe section 230 at the connection with the mixing plate 240 is w2, then 0.2 ≤ w1 / w2 ≤ 0.8. For example, the ratio of w1 / w2 can be selected as 0.2, 0.3, 0.4, 0.5, 0.6, 0.7 or 0.8.

[0054] Optionally, the mixing plate 240 has through holes. This allows the refrigerant to mix as it passes through the holes in the mixing plate 240.

[0055] Optionally, such as Figure 3 As shown, the inflow pipe section 230 includes a curved section 233 and an installation section 234. The axis of the curved section 233 extends along a curve, and its side away from the center of curvature serves as the first pipe wall 231, while its side facing the center of curvature serves as the second pipe wall 232. The installation section 234 connects to the outlet of the curved section 233 and is used to install the mixing plate 240. Figure 4As shown, when the refrigerant flows along the curved section 233, due to the influence of centrifugal force, the heavier liquid refrigerant flows along the first pipe wall 231, while the lighter gaseous refrigerant flows along the second pipe wall 232. The mixing plate 240 is fixed inside the installation section 234 to ensure thorough mixing of the gas and liquid refrigerants.

[0056] Optionally, curve segment 233 is constructed as a U-shape.

[0057] Optionally, the manifold assembly with the mixing component also includes a main pipe section 200. The main pipe section 200 is connected to the outlet of the inflow pipe section 230 and is provided with multiple distribution branches. In this way, the refrigerant is fully mixed in the inflow pipe section 230, and after mixing, it flows to the main pipe section 200, and then to each distribution branch. Under the action of the mixing component, the gas-liquid two-phase refrigerant in each distribution branch is relatively uniform.

[0058] The first embodiment also provides a heat exchanger 100, including at least a first heat exchange module 110 and a second heat exchange module 120. The first heat exchange module 110 includes a first heat exchange branch group and a first flow path switching component. The first heat exchange branch group includes multiple heat exchange branches. The first flow path switching component is disposed in the first heat exchange branch group and is used to switch the connection mode of at least some different heat exchange branches in the first heat exchange branch group under different operating modes. The first heat exchange module 110 and / or the second heat exchange module 120 are manifold components with a mixing component. Thus, under the action of the mixing component, the uniformity of the gas-liquid two-phase refrigerant within the heat exchanger 100 is improved, thereby improving the heat exchange effect of the heat exchanger 100. The structure of the heat exchanger 100 is detailed above.

[0059] The first embodiment also provides an air conditioning system, including the heat exchanger 100 described above.

[0060] The second embodiment provides a disintegration component. For example... Figure 5 and Figure 6 As shown, the dispersing assembly includes a dispersing cylinder 250, which includes a first opening 253, a first cylindrical surface 251 divided by a first cross-section, and a second cylindrical surface 252. The first cross-section is parallel to the axis of the dispersing cylinder 250. The first cylindrical surface 251 has M first small holes 255, and the second cylindrical surface 252 has N second small holes 256. Refrigerant enters the dispersing cylinder 250 through the first small holes 255 and the second small holes 256, and flows out from the first opening 253. Furthermore, M > N.

[0061] In this embodiment, the dispersing component is suitable for scenarios where the gas-liquid two-phase refrigerant distribution is uneven. For example, when the gas-liquid two-phase refrigerant flows in a pipe section extending along a curve, centrifugal force causes the liquid to move towards the side away from the center of curvature, and the gas to move towards the side towards the center of curvature. In this case, a dispersing component is set in the refrigerant flow path, with the first cylinder surface 251 close to the liquid refrigerant and the second cylinder surface 252 close to the gaseous refrigerant. Since the number of first holes 255 on the first cylinder surface 251 is greater than the number of second holes 256 on the second cylinder surface 252, the larger number of first holes 255 can achieve a better dispersing effect on the liquid refrigerant, and the smaller number of second holes 256 creates less resistance to the gaseous refrigerant. In this way, the uniformity of gas-liquid mixing can be effectively improved.

[0062] Optionally, 2 ≤ M / N ≤ 8. For example, the ratio of M / N can be 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5 or 8.

[0063] Optionally, the diameter of the first small hole 255 is less than or equal to the diameter of the second small hole 256. In this embodiment, the smaller the diameter of the first small hole 255, the better the dispersing effect on the liquid refrigerant.

[0064] Optionally, such as Figure 5 As shown, the first cross-section coincides with the axis of the dispersing cylinder 250. In this embodiment, the first cross-section is the longitudinal cross-section of the dispersing cylinder 250 along the axial direction, so the dispersing cylinder 250 can be divided into a first cylinder surface 251 and a second cylinder surface 252.

[0065] Optionally, the dispersing cylinder 250 further includes a second inlet 254. The second inlet 254 is provided with an orifice plate, and the orifice plate has a third small hole. In this embodiment, the second inlet 254 is located upstream in the flow direction, and the first inlet 253 is located downstream in the flow direction. When the refrigerant flows, it can pass through the first small hole 255, the second small hole 256, and the third small hole into the dispersing cylinder 250, and flow out from the first inlet 253.

[0066] Optionally, a base is provided around the periphery of the first cylinder opening 253, the base being used to install and fix the disintegration component.

[0067] Optionally, such as Figure 5 As shown, after all the first holes 255 are arranged, a first length L1 is formed along the axial direction of the dispersing cylinder 250, and after all the second holes 256 are arranged, a second length L2 is formed along the axial direction of the dispersing cylinder 250. Therefore, L1 > L2. In this embodiment, a longer first length is beneficial for the liquid refrigerant to be fully dispersed by the first holes 255 during flow. A shorter second length is beneficial for the gaseous refrigerant to quickly pass through the second holes 256 and enter the dispersing cylinder 250 during flow.

[0068] Optionally, 2 ≤ L1 / L2 ≤ 8. For example, the ratio of L1 / L2 can be 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5 or 8.

[0069] Optionally, the plurality of first holes 255 may be arranged uniformly or non-uniformly. In this embodiment, the distribution of the first holes 255 can be adjusted according to the actual flow state of the liquid refrigerant.

[0070] Optionally, the plurality of second holes 256 are arranged uniformly or non-uniformly. In this embodiment, the distribution of the second holes 256 can be adjusted according to the actual flow state of the gaseous refrigerant.

[0071] Optionally, the multiple first holes 255 may have the same or different shapes. In this embodiment, the shape of the first holes 255 can be adjusted according to the actual flow state of the liquid refrigerant. For example, when the multiple first holes 255 have different shapes, some of the first holes 255 are constructed as circles, and some of the first holes 255 are constructed as ellipses.

[0072] Optionally, the multiple second holes 256 may have the same or different shapes. In this embodiment, the shape of the second holes 256 can be adjusted according to the actual flow state of the gaseous refrigerant. For example, when the multiple second holes 256 have different shapes, some of the second holes 256 are constructed as circles, and some of the second holes 256 are constructed as ellipses.

[0073] The second embodiment also provides a manifold assembly. The manifold assembly includes an inflow pipe section 230 and the aforementioned dispersing component. The inflow pipe section 230 includes opposing first pipe walls 231 and second pipe walls 232, and when the gas-liquid two-phase refrigerant flows, the liquid refrigerant is closer to the first pipe wall 231, and the gaseous refrigerant is closer to the second pipe wall 232. For example... Figure 6 As shown, the dispersing component is disposed in the inflow pipe section 230, with the first cylindrical surface 251 facing the first pipe wall 231 and the second cylindrical surface 252 facing the second pipe wall 232.

[0074] In this embodiment, when the liquid refrigerant flows along the first pipe wall 231 to the dispersing component, it is fully dispersed as it passes through the first small hole 255 on the first cylindrical surface 251, while the gaseous refrigerant quickly enters the dispersing cylinder 250 through the second small hole 256 on the second cylindrical surface 252. In this way, the dispersed liquid and gaseous refrigerants can be uniformly mixed within the dispersing cylinder 250.

[0075] Optionally, such as Figure 5As shown, the inflow pipe section 230 includes a curved section 233 and an installation section 234. The axis of the curved section 233 extends along a curve, and its side away from the center of curvature serves as the first pipe wall 231, while its side facing the center of curvature serves as the second pipe wall 232. The installation section 234 is connected to the outlet of the curved section 233 and is used to install the dispersing assembly. In this embodiment, when the refrigerant flows along the curved section 233, due to centrifugal force, the heavier liquid refrigerant flows along the first pipe wall 231, and the lighter gaseous refrigerant flows along the second pipe wall 232. The dispersing assembly is fixed in the installation section 234 by a base to ensure thorough mixing of the gas and liquid refrigerant.

[0076] The second embodiment also provides a heat exchanger 100, including at least a first heat exchange module 110 and a second heat exchange module 120. The first heat exchange module 110 includes a first heat exchange branch group and a first flow path switching component. The first heat exchange branch group includes multiple heat exchange branches. The first flow path switching component is disposed in the first heat exchange branch group and is used to switch the connection mode of at least some different heat exchange branches in the first heat exchange branch group under different operating modes. The first heat exchange module 110 and / or the second heat exchange module 120 are the aforementioned manifold components. Thus, under the action of the dispersing component, the uniformity of the gas-liquid two-phase refrigerant within the heat exchanger 100 is improved, thereby improving the heat exchange effect of the heat exchanger 100. The structure of the heat exchanger 100 is detailed above.

[0077] The second embodiment also provides an air conditioning system, including the heat exchanger 100 described above.

[0078] The third embodiment provides a manifold component. For example... Figure 7 As shown, the manifold assembly includes a main pipe section 200, a first branch pipe 210, and a second branch pipe 220. Figure 8 As shown, the main pipe section 200 has an inlet 201 at its first end and an installation port 202 at its second end. The first end of the first branch pipe 210 is connected to the pipe wall of the main pipe section 200. Figure 9 As shown, the first end of the second branch pipe 220 is inserted into the main pipe section 200 from the installation port 202. There is a backflow gap 221 between the outer wall of the first end of the second branch pipe 220 and the inner wall of the main pipe section 200, and the first end of the second branch pipe 220 is located downstream of the first branch pipe 210. The refrigerant flowing to the second end of the main pipe section 200 can flow into the first end of the second branch pipe 220 along the backflow gap 221.

[0079] In this embodiment, the refrigerant enters the main pipe section 200 through the inlet 201, and then flows sequentially along the first branch pipe 210 and the second branch pipe 220. If the first end of the second branch pipe 220 is directly connected to the second end of the main pipe section 200 without extending into it, the flow velocity is low during low-frequency operation of the air conditioning system, causing the refrigerant to not reach the top, resulting in less flow through the second branch pipe 220; during high-frequency operation of the air conditioning system, the flow velocity is high, causing a large amount of refrigerant to rush directly to the top, resulting in less flow through the first branch pipe 210. Therefore, the first end of the second branch pipe 220 is inserted into the main pipe section 200, making the distance between the second branch pipe 220 and the first branch pipe 210 shorter, which helps to ensure that sufficient refrigerant enters the second branch pipe 220. Furthermore, under the action of the return gap 221, when some refrigerant flows to the second end of the main pipe section 200, it flows back along the return gap 221 to the first end of the second branch pipe 220. Then, the flow direction of this part of the refrigerant needs to be turned back again to enter the second branch pipe 220, such as... Figure 9 The path is indicated by the middle arrow. Therefore, the resistance to the refrigerant flowing into the second branch pipe 220 increases, preventing the refrigerant from directly rushing to the top of the second branch pipe 220 and ensuring the refrigerant flow rate in the upstream first branch pipe 210. This effectively balances the flow uniformity between the first branch pipe 210 and the second branch pipe 220. Here, the first branch pipe 210 and the second branch pipe 220 are used to connect the corresponding heat exchange branches of the heat exchanger 100.

[0080] Optionally, the outer diameter of the first end of the main pipe section 200 is D1, and the outer diameter of the first end of the second branch pipe 220 is D2. Then, 0.28≤D2 / D1≤0.89.

[0081] In this embodiment, a reasonable pipe diameter ratio helps to optimize the flow state of the refrigerant within the return gap 221. For example, the ratio of D2 / D1 can be selected as 0.28, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, or 0.89.

[0082] Optionally, such as Figure 8 As shown, multiple first branch pipes 210 are arranged along the extension direction of the main pipe section 200, among which the first branch pipe 210 closest to the second branch pipe 220 is designated as the terminal branch pipe 211. Figure 9 As shown, the distance from the axis of the terminal branch pipe 211 to the second end of the main pipe section 200 is H1, where 20mm ≤ H1 ≤ 198mm. For example, the value of H1 can be 20mm, 40mm, 50mm, 60mm, 80mm, 90mm, 100mm, 120mm, 140mm, 150mm, 170mm, 180mm, 190mm, or 198mm.

[0083] Optionally, multiple first branch pipes 210 are arranged along the extension direction of the main pipe section 200, with the first branch pipe 210 furthest from the second branch pipe 220 designated as the first end branch pipe 212. Furthermore, a connecting component (first connecting component 131) is provided between the first end branch pipe 212 and the last end branch pipe 211, which controls the opening and closing of the main pipe section 200. Thus, the flow path of the refrigerant can be adjusted under the action of the connecting component.

[0084] Optionally, multiple first branch pipes 210 are arranged along the extension direction of the main pipe section 200, wherein the first branch pipe 210 closest to the second branch pipe 220 is designated as the end branch pipe 211; and the distance from the axis of the end branch pipe 211 to the first end of the second branch pipe 220 is H2, where 4mm ≤ H2 ≤ 191mm. For example, the value of H2 can be selected from 4mm, 100mm, 20mm, 40mm, 50mm, 60mm, 80mm, 90mm, 100mm, 120mm, 140mm, 150mm, 170mm, 180mm, or 191mm.

[0085] In this embodiment, by reasonably setting the values ​​of H1 and H2, it is beneficial to ensure the length of the return gap 221 and to ensure that the end branch pipe 211 and the first branch pipe 210 are not too close or too far apart, thereby reducing the conflict and eddies generated when the refrigerant is diverted through different branch pipes, and making the refrigerant flow in the manifold component smoother.

[0086] In some embodiments, the manifold assembly further includes an inflow pipe section 230. The inflow pipe section 230 has a refrigerant inlet at its first end and an outlet at its second end, the outlet being connected to the inflow inlet 201 of the main pipe section 200. The inflow pipe section 230 includes opposing first and second pipe walls 231 and 232, with the liquid refrigerant near the first pipe wall 231 and the gaseous refrigerant near the second pipe wall 232 during two-phase refrigerant flow. Furthermore, the inflow pipe section 230 includes a mixing assembly and / or a dispersing assembly. The mixing assembly is used to mix the gaseous and liquid refrigerant, and the dispersing assembly is used to disperse the liquid refrigerant.

[0087] In this embodiment, the refrigerant enters the inflow pipe section 230 through the refrigerant inlet. During flow, the liquid refrigerant approaches the first pipe wall 231, and the gaseous refrigerant approaches the second pipe wall 232. Then, it enters the main pipe section 200 from the inflow pipe section 230, and finally flows along the first branch pipe 210 and the second branch pipe 220 in sequence. Here, with only a mixing component, the gas-liquid two-phase refrigerant is fully mixed in the inflow pipe section 230. With only a dispersing component, the gas-liquid two-phase refrigerant is fully dispersed, which also facilitates thorough mixing. With both a mixing component and a dispersing component, the combined effect of the two significantly improves the mixing uniformity of the gas-liquid two-phase refrigerant. After the refrigerant enters the main pipe section 200, the flow uniformity of the first branch pipe 210 and the second branch pipe 220 is effectively balanced by the return gap 221, and each branch pipe carries a uniformly mixed gas-liquid two-phase refrigerant.

[0088] Optionally, if only a mixing assembly is provided in the inflow pipe section 230, the mixing assembly includes a mixing plate 240. A first side of the mixing plate 240 is connected to the first pipe wall 231, and a second side of the mixing plate 240 is inclined towards the refrigerant outflow direction. A mixing gap 241 is formed between the second side of the mixing plate 240 and the second pipe wall 232. The mixing plate 240 can guide the upstream liquid refrigerant to the mixing gap 241, so that the liquid and gaseous refrigerant mix at the mixing gap 241 before flowing into the main pipe section 200.

[0089] In this embodiment, the specific structure of the mixing assembly is detailed in the first embodiment and will not be repeated here. After the refrigerant enters the inflow pipe section 230, under the action of the mixing plate 240, the liquid refrigerant and gaseous refrigerant are guided to mix at the mixing gap 241 and sprayed downstream, effectively improving the uniformity of gas-liquid mixing. After the uniformly mixed refrigerant enters the main pipe section 200, it is sequentially split along the first branch pipe 210 and the second branch pipe 220.

[0090] Optionally, if only a dispersing assembly is provided in the inflow pipe section 230, the dispersing assembly includes a dispersing cylinder 250. The dispersing cylinder 250 includes a first cylinder opening 253, a first cylinder surface 251 and a second cylinder surface 252 divided by a first cross section, the first cross section being parallel to the axis of the dispersing cylinder 250; wherein, the first cylinder surface 251 is provided with M first small holes 255, and the second cylinder surface 252 is provided with N second small holes 256; the refrigerant enters the dispersing cylinder 250 through the first small holes 255 and the second small holes 256, and flows out from the first cylinder opening 253; and, M > N; wherein, the first cylinder surface 251 faces the first pipe wall 231, and the second cylinder surface 252 faces the second pipe wall 232.

[0091] In this embodiment, the specific structure of the dispersing component is detailed in the second embodiment and will not be repeated here. After the refrigerant enters the inflow pipe section 230, under the action of the dispersing component, the numerous first small holes 255 can effectively disperse the liquid refrigerant, while the fewer second small holes 256 provide less resistance to the gaseous refrigerant, effectively improving the uniformity of gas-liquid mixing. After uniform mixing, the refrigerant enters the main pipe section 200 and is then diverted along the first branch pipe 210 and the second branch pipe 220 in sequence.

[0092] Optionally, such as Figure 10 As shown, when both a mixing assembly and a dispersing assembly are installed in the inflow pipe section 230, the dispersing assembly is located downstream of the mixing plate 240. The dispersing assembly includes a dispersing cylinder 250, which includes a first cylinder opening 253, a first cylinder surface 251 and a second cylinder surface 252 divided by a first cross section, the first cross section being parallel to the axis of the dispersing cylinder 250; wherein, the first cylinder surface 251 is provided with M first small holes 255, and the second cylinder surface 252 is provided with N second small holes 256; the refrigerant enters the dispersing cylinder 250 through the first small holes 255 and the second small holes 256, and flows out from the first cylinder opening 253; and, M > N; wherein, the first cylinder surface 251 faces the second pipe wall 232 and is close to the mixing gap 241, and the second cylinder surface 252 faces the first pipe wall 231.

[0093] In this embodiment, compared with embodiments that separately set a dispersing component (such as...) Figure 5 The difference is that the first cylindrical surface 251 of the dispersing component faces the second pipe wall 232. Because a mixing plate 240 is installed upstream of the dispersing component, guiding the liquid refrigerant from the first pipe wall 231 to the second pipe wall 232, there is not a large amount of liquid refrigerant downstream of the mixing plate 240 on the first pipe wall 231. Simultaneously, the liquid and gaseous refrigerant mix at the mixing gap 241 and are then sprayed downstream. To further improve the uniformity of mixing, the first cylindrical surface 251 is positioned facing the second pipe wall 232 and close to the mixing gap 241. Thus... Figure 11As shown, the refrigerant at the mixing gap 241 is directly injected onto the first cylinder surface 251. Because the first cylinder surface 251 has a large number of first small holes 255, the injected refrigerant is thoroughly dispersed. Simultaneously, some refrigerant enters the dispersing cylinder 250 through the second small holes 256. Since the mixing plate 240 provides some resistance to the downstream first pipe wall 231, the number of second small holes 256 is designed to be relatively small and their diameter relatively large, which helps to reduce pressure loss. Thus, the combined effects of the mixing component and the dispersing component significantly improve the mixing uniformity of the gas-liquid two-phase refrigerant. Furthermore, after the refrigerant enters the main pipe section 200, the flow distribution of the first branch pipe 210 and the second branch pipe 220 is effectively balanced under the action of the return gap 221. In this way, the combination of the mixing component, the dispersing component, and the return gap 221 achieves a uniform distribution of refrigerant flow in each branch pipe, and the gas-liquid mixing effect of the refrigerant in each branch pipe is good.

[0094] The third embodiment also provides a heat exchanger 100, including at least a first heat exchange module 110 and a second heat exchange module 120. The first heat exchange module 110 includes a first heat exchange branch group and a first flow path switching component. The first heat exchange branch group includes multiple heat exchange branches. The first flow path switching component is disposed in the first heat exchange branch group and is used to switch the connection mode of at least some different heat exchange branches in the first heat exchange branch group under different operating modes. The first heat exchange module 110 and / or the second heat exchange module 120 are manifold components with a mixing component. Thus, under the action of the mixing component, the uniformity of the gas-liquid two-phase refrigerant within the heat exchanger 100 is improved, thereby improving the heat exchange effect of the heat exchanger 100. The structure of the heat exchanger 100 is detailed above.

[0095] The third embodiment also provides an air conditioning system including the heat exchanger 100 described above.

[0096] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A header member characterized by, include: The main pipe section (200) has an inlet (201) at its first end and an installation port (202) at its second end; The first branch pipe (210) has its first end connected to the pipe wall of the main pipe section (200); The second branch pipe (220) has its first end inserted into the main pipe section (200) from the installation port (202). There is a backflow gap (221) between the outer wall of its first end and the inner wall of the main pipe section (200). Its first end is located downstream of the first branch pipe (210). The refrigerant flowing to the second end of the main pipe section (200) can flow into the first end of the second branch pipe (220) along the return gap (221).

2. The manifold component according to claim 1, characterized in that, The outer diameter of the first end of the main pipe section (200) is D1, and the outer diameter of the first end of the second branch pipe (220) is D2; Therefore, 0.28≤D2 / D1≤0.

89.

3. The manifold component according to claim 1, characterized in that, Multiple first branch pipes (210) are arranged along the extension direction of the main section (200), wherein the first branch pipe (210) closest to the second branch pipe (220) is designated as the end branch pipe (211); and the distance from the axis of the end branch pipe (211) to the second end of the main section (200) is H1; Therefore, 20mm≤H1≤198mm.

4. The manifold component according to claim 3, characterized in that, Multiple first branch pipes (210) are arranged along the extension direction of the main pipe section (200), among which the first branch pipe (210) farthest from the second branch pipe (220) is denoted as the first end branch pipe (212); Furthermore, a connecting component is provided between the first branch pipe (212) and the last branch pipe (211), which is used to control the opening and closing of the main pipe section (200).

5. The manifold component according to claim 1, characterized in that, Multiple first branch pipes (210) are arranged along the extension direction of the main pipe section (200), wherein the first branch pipe (210) closest to the second branch pipe (220) is denoted as the end branch pipe (211); and the distance from the axis of the end branch pipe (211) to the first end of the second branch pipe (220) is H2; Therefore, 4mm≤H2≤191mm.

6. The header member of any one of claims 1 to 5, wherein, Also includes: The inflow pipe section (230) has a refrigerant inlet at its first end and an outlet at its second end, and the outlet is connected to the inflow inlet (201) of the main pipe section (200); the inflow pipe section (230) includes a first pipe wall (231) and a second pipe wall (232) opposite to each other, and when the gas and liquid two-phase refrigerant flows, the liquid refrigerant is close to the first pipe wall (231) and the gaseous refrigerant is close to the second pipe wall (232); Furthermore, the inflow pipe section (230) is equipped with a mixing component and / or a dispersing component, wherein the mixing component is used to mix the gas and liquid two-phase refrigerant, and the dispersing component is used to disperse the liquid refrigerant.

7. The header member of claim 6, wherein When only a mixing assembly is provided in the inflow pipe section (230), the mixing assembly includes: A mixing plate (240) has a first side connected to a first pipe wall (231), and a second side of the mixing plate (240) is inclined toward the refrigerant outflow direction. Furthermore, there is a mixing gap (241) between the second side of the mixing plate (240) and the second pipe wall (232). The mixing plate (240) can guide the upstream liquid refrigerant to the mixing gap (241) so that the liquid refrigerant and gaseous refrigerant can mix at the mixing gap (241) and then flow to the main pipe section (200).

8. The header member of claim 7, wherein, If a dispersing assembly is also provided within the inflow pipe section (230), the dispersing assembly is located downstream of the mixing plate (240); the dispersing assembly includes: The dispersing cylinder (250) includes a first cylinder opening (253), a first cylinder surface (251) divided by a first cross section, and a second cylinder surface (252), the first cross section being parallel to the axis of the dispersing cylinder (250); wherein, the first cylinder surface (251) is provided with M first small holes (255), and the second cylinder surface (252) is provided with N second small holes (256); the refrigerant enters the dispersing cylinder (250) through the first small holes (255) and the second small holes (256), and flows out from the first cylinder opening (253); and, M > N; The first cylindrical surface (251) faces the second pipe wall (232) and is close to the mixing gap (241), while the second cylindrical surface (252) faces the first pipe wall (231).

9. The header member of claim 6, wherein, In the case where only a dispersing component is provided in the inflow pipe section (230), the dispersing component includes: The dispersing cylinder (250) includes a first cylinder opening (253), a first cylinder surface (251) divided by a first cross section, and a second cylinder surface (252), the first cross section being parallel to the axis of the dispersing cylinder (250); wherein, the first cylinder surface (251) is provided with M first small holes (255), and the second cylinder surface (252) is provided with N second small holes (256); the refrigerant enters the dispersing cylinder (250) through the first small holes (255) and the second small holes (256), and flows out from the first cylinder opening (253); and, M > N; The first cylindrical surface (251) faces the first pipe wall (231), and the second cylindrical surface (252) faces the second pipe wall (232).

10. A heat exchanger, characterized by It includes at least a first heat exchange module (110) and a second heat exchange module (120), wherein the first heat exchange module (110) includes: The first heat exchange branch group includes multiple heat exchange branches; A first flow path switching component is disposed in the first heat exchange branch group and is used to switch the connection mode of at least some different heat exchange branches in the first heat exchange branch group under different operating modes. The first heat exchange module (110) and / or the second heat exchange module (120) include the manifold component as described in any one of claims 1 to 9.

11. An air conditioning system, characterised in that, Including the heat exchanger as described in claim 10.

Images